Boiler



Aulg.' 221927 w. G. HOAGLAND l I 9 BOILER Filed Aug. 11, 19:5,5

MIM

INVENTOR n d l l l y BY 85a y, l

WITNESS:

ATTORNEY Patented Aug. 2, 1927.

Application filed August 11,

This invention relates to waterboilers and has for its object the provisionof a sectional water tube boiler designed for general use and so constructed that there is a continuous circulation which will prevent the formation of scale on the tubes, the arrangement being furthermore such that there is never any direct heat applied to the .mudv ring, hence avoiding hardening, burning or sticking of any sediment therein.

Another object is the provision of a device of this character which will be simple and inexpensive in manufacture, highly efficient in use, durable in service and a general improvement in the art.

With the above and other objects and advantages in view the invention consists in the details of construction to be hereinafter more fully described and claimed and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of the device,

vFigure 2 is a front elevation,

Figure 3 is a top 'plan.view,

Figure t is a vertical section taken from front to back, on the line 4-4 of Figure 1.

Referring more particularly to the drawings the numeral 10 designates the steam dome or header into which lead `horizontal pipes 11 connected with the upper ends of two spaced series of upright sections .12 which have their lower endsconnected with a mud ring 13. Between the mud ring and the sections 12 are connections 14 and interposed in the horizontal tubes or pipes 11 are similar connections 15 which permit detachment of any portions of the device when such is necessary.y Leading from the mud ring 13 is a circulating pipe 16 which also leads intothe bottom of the domell() at one end thereof and interposed in this circulating pipe is a connection 17 which will permit detachment of the parts.

The water inlet, not shown, is connected with the circulating pipe 16 at the point 18, while the steam outlet from the dome is shown at 19. At the bottom of the device is a blow off lug 20.

Extending across the device are two blanks of tubes 21 and 22 which rlead from each pair of upright pipes or from the upper sections 12 at one side to the lower sections at the opposite side in crossed relation as norman- 1923. serial 110.6563551.

` witte. HOAGLAND, or NnPNnnoEQKANss' shown. The tubes in` one bank or series point 18 and goes down to the mud ring 13.'

The water rises from the ringthrough the connections 14 into the sections 12 where it is exposed to lheat byV any vdesired means or from any propersource. The heated water rises through the banks of tubes`21 and 22 to the upper sections and enters the dome 10, the steam being taken .therefrom v'at the connection 19, and the water returning through the circulatingpipe 16 to the mud ring@ This operation is continuous and itis to be` noted that there is afcontinuous circulation which will prevent the formation of scale. Owing to the fact that the mud ring is not exposed to direct heat there will be no burn-` ing, baking or hardening of the sediment which may accumulate therein and the de-V vice will therefore not clog but should givel long and satisfactory service.

-While I have shown rand described the ypreferred embodiment of the invention itis of course to be understood that I reserve the right to make such changes in theform, construction and arrangement of parts as will notdepart from the spirit of the invention i yor the scope of the subjoined claim.

Having' thus described my invention I claim:

In a boiler ofthecharacter described, a mud ring, a longitudinally extending dome located above the mud ring at a point abovek the center thereof and of considerably less width than the mud ring, a plurality of upright pipes connectedwith the sides of the mud ring and terminating in horizontal in-y ward extensions. leading into the opposite sides of the dome, `a steam outlet at the center of the top of the dome, a circulating pipe connecting the mud ring' and the dome at one end of the latter and equipped-with a water inlet, and a -plurality of series of tubes arranged ininterfitting relation, there being two banks or series of tubes for each Gn. p p '1,637,939

pair of upright pipes, one bank or series of therewith, and the tubes of one bank or tubes of each pair connecting at oneV end Series being offset to be out of alinement with the lower portion of one upright pipe with those of the other series to avoid the i 10 and att-heother end with the upper portion same. i p l of the opppsite upright pipe, Ysaid upright 111 testimonyWhemofvlafxpmysignature.

'pipes being provided With partitions between the connections of the banks oitubes" i, p G. ITIOALGLAND.v 

